A) \[M{{L}^{2}}{{T}^{-2}}\]
B) \[ML{{T}^{-2}}\]
C) \[M{{L}^{-1}}{{T}^{-3}}\]
D) \[M{{L}^{-2}}{{T}^{-2}}\]
Correct Answer: A
Solution :
Couple = Force \[\times \] Arm length = \[[ML{{T}^{-2}}]\,[L]\,=\,[M{{L}^{2}}{{T}^{-2}}]\]
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